3900899 has 4 divisors (see below), whose sum is σ = 3937464. Its totient is φ = 3864336.

The previous prime is 3900893. The next prime is 3900907. The reversal of 3900899 is 9980093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9980093 = 1259 ⋅7927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3900899 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3900893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18122 + ... + 18335.

It is an arithmetic number, because the mean of its divisors is an integer number (984366).

Almost surely, 2^3900899 is an apocalyptic number.

3900899 is a deficient number, since it is larger than the sum of its proper divisors (36565).

3900899 is a wasteful number, since it uses less digits than its factorization.

3900899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36564.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 3900899 is about 1975.0693658705. The cubic root of 3900899 is about 157.4181854413.

The spelling of 3900899 in words is "three million, nine hundred thousand, eight hundred ninety-nine".